1/* 2 * INET An implementation of the TCP/IP protocol suite for the LINUX 3 * operating system. INET is implemented using the BSD Socket 4 * interface as the means of communication with the user level. 5 * 6 * Global definitions for the Ethernet IEEE 802.3 interface. 7 * 8 * Version: @(#)if_ether.h 1.0.1a 02/08/94 9 * 10 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 11 * Donald Becker, <becker@super.org> 12 * Alan Cox, <alan@redhat.com> 13 * Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk> 14 * 15 * This program is free software; you can redistribute it and/or 16 * modify it under the terms of the GNU General Public License 17 * as published by the Free Software Foundation; either version 18 * 2 of the License, or (at your option) any later version. 19 */ 20 21#ifndef _LINUX_IF_ETHER_H 22#define _LINUX_IF_ETHER_H 23 24#include <linux/types.h> 25 26/* 27 * IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble 28 * and FCS/CRC (frame check sequence). 29 */ 30 31#define ETH_ALEN 6 /* Octets in one ethernet addr */ 32#define ETH_HLEN 14 /* Total octets in header. */ 33#define ETH_ZLEN 60 /* Min. octets in frame sans FCS */ 34#define ETH_DATA_LEN 1500 /* Max. octets in payload */ 35#define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */ 36#define ETH_FCS_LEN 4 /* Octets in the FCS */ 37 38/* 39 * These are the defined Ethernet Protocol ID's. 40 */ 41 42#define ETH_P_LOOP 0x0060 /* Ethernet Loopback packet */ 43#define ETH_P_PUP 0x0200 /* Xerox PUP packet */ 44#define ETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */ 45#define ETH_P_IP 0x0800 /* Internet Protocol packet */ 46#define ETH_P_X25 0x0805 /* CCITT X.25 */ 47#define ETH_P_ARP 0x0806 /* Address Resolution packet */ 48#define ETH_P_BPQ 0x08FF /* G8BPQ AX.25 Ethernet Packet [ NOT AN OFFICIALLY REGISTERED ID ] */ 49#define ETH_P_IEEEPUP 0x0a00 /* Xerox IEEE802.3 PUP packet */ 50#define ETH_P_IEEEPUPAT 0x0a01 /* Xerox IEEE802.3 PUP Addr Trans packet */ 51#define ETH_P_DEC 0x6000 /* DEC Assigned proto */ 52#define ETH_P_DNA_DL 0x6001 /* DEC DNA Dump/Load */ 53#define ETH_P_DNA_RC 0x6002 /* DEC DNA Remote Console */ 54#define ETH_P_DNA_RT 0x6003 /* DEC DNA Routing */ 55#define ETH_P_LAT 0x6004 /* DEC LAT */ 56#define ETH_P_DIAG 0x6005 /* DEC Diagnostics */ 57#define ETH_P_CUST 0x6006 /* DEC Customer use */ 58#define ETH_P_SCA 0x6007 /* DEC Systems Comms Arch */ 59#define ETH_P_RARP 0x8035 /* Reverse Addr Res packet */ 60#define ETH_P_ATALK 0x809B /* Appletalk DDP */ 61#define ETH_P_AARP 0x80F3 /* Appletalk AARP */ 62#define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */ 63#define ETH_P_IPX 0x8137 /* IPX over DIX */ 64#define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */ 65#define ETH_P_PAUSE 0x8808 /* IEEE Pause frames. See 802.3 31B */ 66#define ETH_P_SLOW 0x8809 /* Slow Protocol. See 802.3ad 43B */ 67#define ETH_P_WCCP 0x883E /* Web-cache coordination protocol 68 * defined in draft-wilson-wrec-wccp-v2-00.txt */ 69#define ETH_P_PPP_DISC 0x8863 /* PPPoE discovery messages */ 70#define ETH_P_PPP_SES 0x8864 /* PPPoE session messages */ 71#define ETH_P_MPLS_UC 0x8847 /* MPLS Unicast traffic */ 72#define ETH_P_MPLS_MC 0x8848 /* MPLS Multicast traffic */ 73#define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */ 74#define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport 75 * over Ethernet 76 */ 77#define ETH_P_AOE 0x88A2 /* ATA over Ethernet */ 78#define ETH_P_TIPC 0x88CA /* TIPC */ 79 80/* 81 * Non DIX types. Won't clash for 1500 types. 82 */ 83 84#define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */ 85#define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */ 86#define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */ 87#define ETH_P_802_2 0x0004 /* 802.2 frames */ 88#define ETH_P_SNAP 0x0005 /* Internal only */ 89#define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */ 90#define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/ 91#define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */ 92#define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */ 93#define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/ 94#define ETH_P_TR_802_2 0x0011 /* 802.2 frames */ 95#define ETH_P_MOBITEX 0x0015 /* Mobitex (kaz@cafe.net) */ 96#define ETH_P_CONTROL 0x0016 /* Card specific control frames */ 97#define ETH_P_IRDA 0x0017 /* Linux-IrDA */ 98#define ETH_P_ECONET 0x0018 /* Acorn Econet */ 99#define ETH_P_HDLC 0x0019 /* HDLC frames */ 100#define ETH_P_ARCNET 0x001A /* 1A for ArcNet :-) */ 101 102/* 103 * This is an Ethernet frame header. 104 */ 105 106struct ethhdr { 107 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ 108 unsigned char h_source[ETH_ALEN]; /* source ether addr */ 109 __be16 h_proto; /* packet type ID field */ 110} __attribute__((packed)); 111 112#ifdef __KERNEL__ 113#include <linux/skbuff.h> 114 115static inline struct ethhdr *eth_hdr(const struct sk_buff *skb) 116{ 117 return (struct ethhdr *)skb_mac_header(skb); 118} 119 120int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr); 121 122#ifdef CONFIG_SYSCTL 123extern struct ctl_table ether_table[]; 124#endif 125 126/* 127 * Display a 6 byte device address (MAC) in a readable format. 128 */ 129#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x" 130extern char *print_mac(char *buf, const u8 *addr); 131#define DECLARE_MAC_BUF(var) char var[18] __maybe_unused 132 133#endif 134 135#endif /* _LINUX_IF_ETHER_H */ 136